Monaco have signed Belgium international winger Nacer Chadli from West Brom, the Ligue 1 side confirmed.
Chadli swapped England for France for a reported £10million on a three-year deal after West Brom were relegated from the Premier League last season.
"I am very happy to join AS Monaco, a great French club that participates in the Champions League," Chadli said. "The results of the last seasons prove the quality of the project and the ambition of the club.
"I will do everything to help AS Monaco achieve great things and achieve its goals."
L’AS Monaco est heureux d’annoncer la signature pour trois ans de Nacer Chadli (29 ans) en provenance de West Bromwich Albion ! August 30, 2018
Monaco vice-president Vadim Vasilyev added: "We are delighted to welcome Nacer Chadli, an offensive midfielder who has demonstrated his quality. His experience at the highest level and his technical profile will be additional assets for the team."
